Home / 3,916.75-5,405.60-2,260.75

Finding the Fourth Proportional to 3,916.75, 5,405.60 and 2,260.75

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Solution

The fourth proportional to 3,916.75, 5,405.60 and 2,260.75 is: 3,120.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.75 : 5,405.60 = 2,260.75 : x
  2. Step 2: Convert to fraction form
    3,916.75/5,405.60 = 2,260.75/x
  3. Step 3: Cross multiply
    3,916.75x = 5,405.60 × 2,260.75
  4. Step 4: Simplify right side
    3,916.75x = 12,220,698.90
  5. Step 5: Solve for x
    x = 12,220,698.90/3,916.75
  6. Step 6: Final answer
    x = 3,120.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.